TY  - GEN
AU  - Erler,Jens
AU  - Sánchez,Genaro Toledo
TI  - Upper bound on the hadronic light-by-light contribution to the muon g - 2
SN  - 0031-9007
PY  - 2007///0619
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1103/PhysRevLett.97.161801
ER  -